| 摘要 |
The invention relates to a method of operating a telecommunication network for setting up a call between WLAN-enabled mobile terminals. The telecommunication network comprising switching nodes, a service control entity, and WLAN APs serving said WLAN-enabled mobile terminals. The WLAN APs insert Local Media Transfer indications into for example DTAP Setup messages, indicating that media transfer may take place directly inside or between the WLAN APs. A switching node detecting insertion of Local Media Transfer indications invokes the service control entity for a decision on allow-ability of media transfer taking place directly inside or between WLAN APs in view of services executed by the service control entity.
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